now conventional wisdom says debates can rarely help you, but they can hurt you and mitt romney will be looking to do damage to president obama tonight. meantime, in swing state, colorado, debates are coming down to the last minute for everybody. the candidates and those who will be running the show. for more, we go live to danielle nottingham. >> as you mentioned, both candidates are trying to avoid any major mistakes tonight. and it will be all about the economy tonight. the first three segments will be devoted to that topic. president obama will make his case for another four years to fix the comply and mitt romney will argue it's time for a change. when mitt romney and president obama meet on this stage for their first debate, more than 50 million viewers are expected to tune in. greg wayland is an important member of that audience. he's an undecided voter. >> i think they are talking directly to me. >> wayland's top issue, the economy. >> that's going to be the thing for me. someone that comes forward with a cohesive plan for america and where america fits into that. that's what